Safety and Scientific Method Quiz



Name: _______________________________________________________________ Date: ____________

Introduction to the Scientific Method, What is Science?, Graphing and Safety Quiz (60 pts)

Place the printed CAPITAL letter of the correct answer on the line. (12 pts)

| 1. Thing which remains the same during an experiment |A. hypothesis |

| 2. The part of the experiment changed by the experimenter |B. control |

| 3. The part of the experiment that is measured as it responds to the part being changed. |C. inference |

| 4. The part of an experiment that is used to compare with the data |D. independent variable |

| | |

|5. Information that can be seen, felt, smelled, heard, tasted |E. constant |

| 6. A conclusion based on an observation |F. observation |

| |G. dependent variable |

7. What does the quote by Richard Feynman (1964), “Science is a way of trying not to fool ourselves” mean to you (8 pts)?

8. Judy wanted to know how temperature affected the rate of respiration (breathing) in goldfish. She subjected goldfish to a particular temperature for 5 minutes and calculated the average number of gill movements per minute. Her data (the unit is gill movement/min) is recorded below:

|Goldfish # |0( C |10( C |20( C |30( C |40( C |

|1 |9 |11 |14 |16 |20 |

|2 |7 |10 |13 |15 |19 |

|3 |8 |10 |12 |18 |22 |

|4 |10 |11 |17 |19 |21 |

|5 |8 |11 |13 |17 |20 |

|Average | | | | | |

a. Calculate the average gill movements per minute for each temperature and record to the nearest whole number in the space provided on the data table above. (4 pts)

b. On the graph paper below, write an appropriate title for this experiment. (3 pts)

c. On the graph paper below, label the axes appropriately. (4 pts)

d. On the graph paper below, plot the averages as data points. (2 pts)

e. On the graph paper below, draw a line of best fit for your data. (2 pts)

f. What would be an appropriate hypothesis (If…then) for this experiment (4 pts)?

[pic]

9. Calculate the slope of the best fit line. Show your work below, and draw a square around your answer. Don’t forget units! (4 pts)

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|10 . When smelling a substance in the laboratory |A. always point away from people |

| 11. When heating a test tube |B. wearing goggles improperly |

| 12. If you burn yourself |C. no loose hair or jewelry |

| 13. Will result in lower lab grades |D. rinse with cool water |

| 14. Appropriate dress for laboratory |E. put ice on it |

| |F. waft the vapor toward you |

Multiple Choice: Place the printed CAPITAL letter of the best answer on the line provided (6 pts)

_____15. If a chemical is splashed into the eyes, what is the recommended time for rinsing with water?

a. 15 sec b. 5 min c. 15 min d. 110 min

_____16. Which safety measure should you take for every single laboratory experiment?

a. Open all classroom windows b. use heat-resistant gloves

c. wear a lab apron d. follow your teacher’s instructions

_____17. If a beaker has a chipped edge, you should

a. go ahead and use it

b. use it as long as you are not heating it

c. throw it away using procedures for glass

d. give it to another group of students to use

Pledge:

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